package com.wxl.ruiji.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.wxl.ruiji.common.R;
import com.wxl.ruiji.entity.Employee;
import com.wxl.ruiji.service.EmployeeService;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;

@Slf4j
@RestController
@Api(tags = "员工管理")
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;

    /**
     * 员工登录
     *
     * @param request
     * @param employee
     * @return
     */
    @ApiOperation(value = "员工登录")
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee) {

        log.info("员工登录信息 => employee: {}", employee.toString());

        // ①. 将页面提交的密码进行 md5 加密处理
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        // ②. 根据页面提交的用户名查询数据库中员工数据信息
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername, employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);

        // ③. 如果没有查询到, 则返回登录失败结果
        if (emp == null) {
            return R.error("无此员工！");
        }

        // ④. 密码比对，如果不一致, 则返回登录失败结果
        if (!emp.getPassword().equals(password)) {
            return R.error("密码错误，请校验后再试！");
        }

        // ⑤. 查看员工状态，如果为已禁用状态，则返回员工已禁用结果
        if (emp.getStatus() == 0) {
            return R.error("该账号已禁用！");
        }

        // ⑥. 登录成功，将员工id存入Session, 并返回登录成功结果
        request.getSession().setAttribute("employee", emp.getId());
        return R.success(emp);
    }

    /**
     * 员工登出
     *
     * @param request
     * @return
     */
    @ApiOperation("员工登出")
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request) {

        // 清理Session中保存的当前登录员工的id
        request.getSession().removeAttribute("employee");

        return R.success("退出成功");

    }

    /**
     * 新增员工
     *
     * @param request
     * @param employee
     * @return
     */
    @ApiOperation("新增员工")
    @PostMapping
    public R<String> save(HttpServletRequest request, @RequestBody Employee employee) {

        log.info("新增员工信息 => employee：{}", employee.toString());

        // 设置初始密码123456，需要进行md5加密处理
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));

        employeeService.save(employee);

        return R.success("新增员工成功");
    }

    /**
     * 分页查询员工信息
     *
     * @param page     当前查询页码
     * @param pageSize 每页展示记录数
     * @param name     员工姓名 - 可选参数
     * @return
     */
    @ApiOperation("分页查询员工信息")
    @PostMapping("/page")
    public R<Page> page(int page, int pageSize, String name) {

        log.info("分页查询员工信息 => page: {}, pageSize: {}, name: {}", page, pageSize, name);

        // 构造分页构造器
        Page pageInfo = new Page(page, pageSize);

        // 构造条件构造器
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper();

        // 添加过滤条件
        queryWrapper.like(StringUtils.isNotEmpty(name), Employee::getName, name);

        // 添加排序条件
        queryWrapper.orderByDesc(Employee::getUpdateTime);

        // 执行查询
        employeeService.page(pageInfo, queryWrapper);

        return R.success(pageInfo);

    }

    /**
     * 根据 id 修改员工信息
     *
     * @param request
     * @param employee
     * @return
     */
    @ApiOperation(value = "修改员工信息")
    @PutMapping
    public R<String> update(HttpServletRequest request, @RequestBody Employee employee) {

        log.info("修改员工信息 => employee: {}", employee.toString());

        long id = Thread.currentThread().getId();
        log.info("线程id为：{}", id);

        employeeService.updateById(employee);

        return R.success("员工信息修改成功！");

    }

    /**
     * 根据id查询员工信息
     *
     * @param id
     * @return
     */
    @ApiOperation(value = "查询员工信息")
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id) {

        log.info("根据id查询员工信息 => id: {}", id);

        Employee employee = employeeService.getById(id);
        if (employee != null) {
            return R.success(employee);
        }

        return R.error("没有查询到对应员工信息！");

    }

}
